*{
    margin:0;
    padding: 0;
    box-sizing: border-box;
}
.box{
    margin:0 50%;
    height:200px;
    width:150px;
    background-color: antiquewhite;
    text-align: center;
    position: relative;
    left:-75px;
}
.container{
    top:25px;
}
div{
    margin: 15px auto;
    padding: 10px auto;
    text-align: center;
    position: relative;
}
.btn-double{
    height:40px;
    width:150px;
    text-align: center;
    margin: 10px auto;
    position: relative;
}
button{
    padding: 5px;
    margin: 10px 10px;
    height: 40px;
}
button:first-child{
    float: left;
}
button:last-child{
    float: right;
}
